Allstar Performance Aluminum 2 Groove Chevy Crankshaft Pulley - 4-3/4" Diameter 351012 Main hoop is fitted and

Main hoop is fitted and tack welded together allowing for changes or custom seat mounts

starter ring gears welded on both sides

No yoke and low profile design for minimal interference with helmet

Commonly used with solid front engine mounts

Single-layer Pyrovatex FRC construction

Allstar Performance Aluminum 2 Groove Chevy Crankshaft Pulley - 4-3/4" Diameter 351012 Main hoop is fitted andSpecifically for short or Corvette water pumps, pulleys work with power steering pump and pulley to provide a ratio within the GM specified RPM range. Race engine RPM differs greatly from street engines. For 30% less water pump speed and reduced weight and inertia, the crankshaft and water pump pulleys are smaller in diameter than standard reduction pulleys. Acceleration capabilities are greatly enhanced. Specialty items for the Shop, Trailer and